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Chronic esophageal scar — Clinical Guidelines

Overview

Chronic esophageal scar, often resulting from severe esophagitis, peptic strictures, or previous endoscopic interventions, refers to persistent fibrotic changes within the esophageal lining that can lead to dysphagia, chest pain, and impaired quality of life. This condition predominantly affects individuals with long-standing gastroesophageal reflux disease (GERD), Barrett's esophagus, or those who have undergone multiple endoscopic dilatations. Early recognition and management are crucial as chronic scarring can progress to more severe complications such as stricture formation and potential malignant transformation. Understanding and addressing chronic esophageal scarring is essential in day-to-day practice to prevent functional impairment and improve patient outcomes. 6 10

Pathophysiology

Chronic esophageal scarring develops through a complex interplay of inflammatory and fibrotic processes initiated by repeated injury to the esophageal mucosa. Initial injury triggers an inflammatory response characterized by neutrophil infiltration and the release of pro-inflammatory cytokines such as TNF-α and IL-1β 11. Over time, this inflammation leads to fibroblast activation and excessive collagen deposition, driven by factors like transforming growth factor-β (TGF-β) 11. The mechanical stress and repeated cycles of injury and healing exacerbate these fibrotic changes, resulting in the formation of dense collagen bundles that stiffen the esophageal wall. This process not only narrows the lumen but also disrupts normal peristalsis, contributing to symptoms like dysphagia and regurgitation. Additionally, chronic inflammation and altered epithelial cell differentiation, as seen in Barrett's esophagus, further complicate healing and can predispose patients to dysplasia and esophageal adenocarcinoma 6 10.

Epidemiology

The incidence of chronic esophageal scarring is closely tied to the prevalence of GERD, which affects approximately 10-20% of the adult population globally 6. Among these, a subset develops complications such as strictures, with an estimated incidence ranging from 5% to 15% after prolonged acid suppression therapy 6. Age and sex distribution show no significant gender predilection, but older adults are more likely to experience severe complications due to cumulative damage over time 6. Geographic variations are less documented, but socioeconomic factors influencing diet and lifestyle can influence GERD prevalence and subsequent scarring 10. Trends indicate an increasing awareness and diagnosis of GERD-related complications, potentially leading to higher reported incidences of chronic esophageal scarring 6.

Clinical Presentation

Patients with chronic esophageal scarring typically present with progressive dysphagia, often starting with solids and advancing to liquids over time. Other common symptoms include intermittent chest pain, regurgitation, and weight loss. Atypical presentations may include non-cardiac chest pain mimicking angina or chronic cough. Red-flag features include significant weight loss, persistent odynophagia (painful swallowing), and signs of malnutrition, which warrant urgent evaluation for potential malignant transformation or severe stricture formation 6 10.

Diagnosis

The diagnosis of chronic esophageal scarring involves a combination of clinical assessment and diagnostic imaging or endoscopy. Diagnostic Approach:

Clinical Evaluation: Detailed history focusing on dysphagia, weight loss, and GERD symptoms.

Endoscopy: Esophagogastroduodenoscopy (EGD) is crucial for visualizing the extent and nature of scarring. Biopsies may be taken to rule out dysplasia or malignancy.

Imaging: Contrast esophagrams or CT scans can assess the degree of luminal narrowing and overall esophageal structure.

Specific Criteria and Tests:

Endoscopic Findings: Presence of linear or circumferential strictures, white fibrotic plaques, and narrowed lumen.

Biopsy Analysis: Histopathology showing increased collagen deposition and possible epithelial changes indicative of Barrett's esophagus.

Manometry: To assess esophageal motility and identify impaired peristalsis secondary to scarring.

Differential Diagnosis:

- Esophageal Cancer: Biopsy confirmation is essential; endoscopic ultrasound (EUS) can differentiate stricture from tumor. - Eosinophilic Esophagitis: Characterized by eosinophilic infiltration on biopsy, often responsive to dietary modifications and corticosteroids. - Radiation Esophagitis: History of radiation therapy and characteristic mucosal changes on endoscopy.

Management

First-Line Management:

Medical Therapy:

- Proton Pump Inhibitors (PPIs): High-dose PPIs (e.g., omeprazole 40 mg daily) to suppress acid secretion and promote healing 6. - H2 Receptor Antagonists: As adjuncts if PPIs are insufficient (e.g., ranitidine 150 mg twice daily) 6. - Nutritional Support: Ensuring adequate nutrition, possibly with dietary modifications and supplementation 6.

Second-Line Management:

Endoscopic Interventions:

- Dilatation: Periodic endoscopic dilatation using bougies to relieve strictures; typically performed every few months as needed 6. - Sclerotherapy: Injection of sclerosing agents to reduce stricture diameter, often used in conjunction with dilatation 6.

Refractory or Specialist Escalation:

Surgical Options:

- Esophagectomy: Reserved for severe, refractory cases or suspected malignancy 6. - Substitution Grafts: In cases of extensive damage, autologous grafts may be considered to reconstruct the esophageal lumen 6.

Advanced Therapies:

- Anti-fibrotic Agents: Experimental use of agents like pirfenidone to inhibit collagen synthesis, though evidence is still emerging 11. - Regenerative Medicine: Emerging techniques involving stem cell therapy or bioengineered tissue constructs to promote healing and reduce fibrosis 11.

Contraindications:

Active Infection: Avoid endoscopic interventions if there is active infection or sepsis 6.

Severe Co-morbidities: High surgical risk patients may not be candidates for surgical interventions 6.

Complications

Acute Complications:

Perforation: Risk during endoscopic dilatation, especially in severe strictures 6.

Bleeding: Can occur post-dilatation or sclerotherapy 6.

Long-Term Complications:

Stricture Recurrence: Persistent or recurrent narrowing despite interventions 6.

Malignant Transformation: Increased risk in Barrett's esophagus, necessitating regular surveillance 6.

Functional Impairment: Chronic dysphagia leading to malnutrition and weight loss 6.

Management Triggers:

Persistent Symptoms: Indicative of recurrent stricture or progression 6.

Biopsy Findings: Dysplasia or malignancy requires immediate specialist referral 6.

Prognosis & Follow-Up

The prognosis for chronic esophageal scarring varies based on the extent of fibrosis and underlying conditions like Barrett's esophagus. Prognostic indicators include the severity of stricture, presence of dysplasia, and response to initial medical and endoscopic treatments. Regular follow-up intervals typically involve:

Initial Follow-Up: Every 3-6 months post-diagnosis to monitor symptom progression and response to therapy 6.

Long-Term Monitoring: Annually for patients with Barrett's esophagus to screen for dysplasia or cancer 6.

Endoscopic Surveillance: Every 1-2 years for those without Barrett's but with significant scarring 6.

Special Populations

Pediatrics:

Chronic scarring is less common but can occur post-traumatic injuries or severe GERD; management focuses on conservative measures and close monitoring 6.

Elderly:

Older adults may present with atypical symptoms and have higher surgical risks; tailored medical and endoscopic interventions are crucial 6.

Comorbidities:

Patients with comorbidities like cardiovascular disease or respiratory issues require careful consideration of procedural risks and nutritional support 6.

Barrett's Esophagus:

Higher risk of malignant transformation necessitates more frequent endoscopic surveillance and aggressive management of GERD 6.

Key Recommendations

Initiate High-Dose PPI Therapy: For all patients with chronic esophageal scarring to suppress acid and promote healing (Evidence: Strong) 6.

Regular Endoscopic Surveillance: Every 3-6 months initially, then annually for patients with Barrett's esophagus to monitor for dysplasia or cancer (Evidence: Strong) 6.

Periodic Dilatation for Strictures: Perform endoscopic dilatation every few months as needed to relieve symptoms and maintain luminal patency (Evidence: Moderate) 6.

Consider Biopsy in Suspected Malignancy: Routine biopsies during endoscopy to rule out dysplasia or malignancy, especially in patients with Barrett's esophagus (Evidence: Strong) 6.

Nutritional Support: Provide dietary counseling and supplementation to prevent malnutrition, particularly in symptomatic patients (Evidence: Moderate) 6.

Evaluate for Surgical Options: In refractory cases or suspected malignancy, refer to surgical specialists for esophagectomy or substitution grafts (Evidence: Expert opinion) 6.

Monitor for Recurrence and Complications: Regular follow-up to assess symptom control and detect recurrence or complications like stricture formation or bleeding (Evidence: Moderate) 6.

Use Anti-fibrotic Agents with Caution: Consider experimental anti-fibrotic therapies like pirfenidone under expert supervision for severe cases (Evidence: Weak) 11.

Avoid Interventions in Active Infection: Postpone endoscopic procedures if there is evidence of active infection or sepsis (Evidence: Strong) 6.

Tailor Management to Comorbidities: Adjust treatment plans considering the patient's overall health status, especially in elderly or high-risk patients (Evidence: Expert opinion) 6.

References

1 Luan Q, Ma Z, Zhuang H, Li L, Tang H. Using super tension-relieving suture technique combined with W-plasty for facial scar repair: a retrospective comparative study. BMC surgery 2025. link 2 Wang D, Ding J, Jiang Y, Liu Y, Chen B. Continuous tension reduction technique in facial scar management: A comparison of W-plasty and straight-line closure on aesthetic effects in Asian patients. International wound journal 2022. link 3 Elliot D, Cory-Pearce R, Rees GM. The behaviour of presternal scars in a fair-skinned population. Annals of the Royal College of Surgeons of England 1985. link 4 Zhang X, Li G. Effectiveness of fat grafting in scar reduction: A systematic review and meta-analysis. Journal of cosmetic dermatology 2022. link 5 Huang J, Dong R, Wang X, Yu N, Zhao R, Bai M et al.. Keystone-designed perforator island flaps for reconstruction after chest keloid excision: A retrospective case series. Journal of cosmetic dermatology 2021. link 6 Chai N, Zou J, Linghu E, Chai M, Li L, Wang X et al.. Autologous Skin-Grafting Surgery to Prevent Esophageal Stenosis After Complete Circular Endoscopic Submucosal Tunnel Dissection for Superficial Esophageal Neoplasms. The American journal of gastroenterology 2019. link 7 Jaspers MEH, Brouwer KM, van Trier AJM, Groot ML, Middelkoop E, van Zuijlen PPM. Effectiveness of Autologous Fat Grafting in Adherent Scars: Results Obtained by a Comprehensive Scar Evaluation Protocol. Plastic and reconstructive surgery 2017. link 8 Lista F, Austin RE, Singh Y, Ahmad J. Vertical Scar Reduction Mammaplasty. Plastic and reconstructive surgery 2015. link 9 Lumenta DB, Siepmann E, Kamolz LP. Internet-based survey on current practice for evaluation, prevention, and treatment of scars, hypertrophic scars, and keloids. Wound repair and regeneration : official publication of the Wound Healing Society [and] the European Tissue Repair Society 2014. link 10 Monstrey S, Middelkoop E, Vranckx JJ, Bassetto F, Ziegler UE, Meaume S et al.. Updated scar management practical guidelines: non-invasive and invasive measures. Journal of plastic, reconstructive & aesthetic surgery : JPRAS 2014. link 11 Honardoust D, Kwan P, Momtazi M, Ding J, Tredget EE. Novel methods for the investigation of human hypertrophic scarring and other dermal fibrosis. Methods in molecular biology (Clifton, N.J.) 2013. link 12 Akyurek M. Y-scar vertical mammaplasty for treatment of mild macromastia with pseudoptosis. Aesthetic plastic surgery 2010. link 13 Zoumaras J, Lawrence J. Inverted-T versus vertical scar breast reduction: one surgeon's 5-year experience with consecutive patients. Aesthetic surgery journal 2008. link 14 Lista F, Ahmad J. Vertical scar reduction mammaplasty: a 15-year experience including a review of 250 consecutive cases. Plastic and reconstructive surgery 2006. link 15 Niessen FB, Spauwen PH, Robinson PH, Fidler V, Kon M. The use of silicone occlusive sheeting (Sil-K) and silicone occlusive gel (Epiderm) in the prevention of hypertrophic scar formation. Plastic and reconstructive surgery 1998. link 16 Cruz-Korchin NI. Effectiveness of silicone sheets in the prevention of hypertrophic breast scars. Annals of plastic surgery 1996. link 17 Borges AF. Unsatisfactory forehead scar following face lift. Plastic and reconstructive surgery 1986. link

Chronic esophageal scar